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Friday, 10 January 2014

Stop_motion_animation

Stop-motion animation is used to describe animation created by physically manipulating real-world objects and photographing them one frame of film at a time to create the illusion of movement. There are many different types of stop-motion animation, usually named after the medium used to create the animation. Computer software is widely available to create this type of animation; however, traditional stop motion animation is usually less expensive and time-consuming to produce than current computer animation.

Computer animation[edit]

Computer animation encompasses a variety of techniques, the unifying factor being that the animation is created digitally on a computer. This animation takes less time to produce than previous traditional animation. 2D animation techniques tend to focus on image manipulation while 3D techniques usually build virtual worlds in which characters and objects move and interact. 3D animation can create images that seem real to the viewer.

2D animation[edit]

Animation-W.gif
2D animation figures are created and/or edited on the computer using 2D bitmap graphics or created and edited using 2D vector graphics. This includes automated computerized versions of traditional animation techniques such as interpolated morphingonion skinning and interpolated rotoscoping. 2D animation has many applications, including analog computer animationFlash animation and PowerPoint animationCinemagraphs are still photographs in the form of an animated GIF file of which part is animated.
2D Terms[edit]
  • Final line advection animation,[6] a technique that gives the artists and animators a lot more influence and control over the final product as everything is done within the same department:
    In Paperman, we didn’t have a cloth department and we didn’t have a hair department. Here, folds in the fabric, hair silhouettes and the like come from of the committed design decision-making that comes with the 2D drawn process. Our animators can change things, actually erase away the CG underlayer if they want, and change the profile of the arm. And they can design all the fabric in that Milt Kahl kind-of way, if they want to.[7]

3D animation[edit]

3D animation is digitally modeled and manipulated by an animator. The animator starts by creating an external 3D mesh to manipulate. A mesh is a geometric configuration that gives the visual appearance of form to a 3D object or 3D environment. The mesh may have many vertices which are the geometric points which make up the mesh; it is given an internal digital skeletal structure called an armature that can be used to control the mesh with weights. This process is called rigging and can be programmed for movement with keyframes.
Other techniques can be applied, such as mathematical functions (e.g., gravity, particle simulations), simulated fur or hair, and effects such as fire and water simulations. These techniques fall under the category of 3D dynamics.
3D Terms[edit]

Mechanical animation[edit]

Audio-Animatronic version of U.S. President Abraham Lincoln.
  • Animatronics is the use of mechatronics to create machines which seem animate rather than robotic.
    • Audio-Animatronics and Autonomatronics is a form of robotics animation, combined with 3-D animation, created by Walt Disney Imagineering for shows and attractions at Disney theme parks move and make noise (generally a recorded speech or song), but are fixed to whatever supports them. They can sit and stand but cannot walk. An Audio-Animatron is different from an android-type robot in that it uses prerecorded movements and sounds, rather than responding to external stimuli. In 2009, Disney created an interactive version of the technology called Autonomatronics.
    • Linear Animation Generator is a form of animation by using static picture frames installed in a tunnel or a shaft. The animation illusion is created by putting the viewer in a linear motion, parallel to the installed picture frames. The concept and the technical solution, were invented in 2007 by Mihai Girlovan in Romania.
  • Chuckimation is a type of animation created by the makers of the cartoon Action League Now! in which characters/props are thrown, or chucked from off camera or wiggled around to simulate talking by unseen hands,
  • Puppetry is a form of theatre or performance animation that involves the manipulation of puppets. It is very ancient, and is believed to have originated 3000 years BC.[1] Puppetry takes many forms but they all share the process of animating inanimate performing objects. Puppetry is used in almost all human societies both as entertainment – in performance – and ceremonially in rituals and celebrations such as carnivals. Most puppetry involves storytelling.
Toy Story zoetrope at Disney California Adventure creates illusion of motion using figures, rather than static pictures.
  • Zoetrope is a device that produces the illusion of motion from a rapid succession of static pictures. The term zoetrope is from the Greek words ζωή (zoē), meaning "alive, active", and τρόπος (tropos), meaning "turn", with "zoetrope" taken to mean "active turn" or "wheel of life".

Other animation styles, techniques and approaches[edit]

  • Drawn on film animation: a technique where footage is produced by creating the images directly on film stock, for example by Norman McLarenLen Lye and Stan Brakhage.
  • Paint-on-glass animation: a technique for making animated films by manipulating slow drying oil paints on sheets of glass, for example by Aleksandr Petrov.
  • Erasure animation: a technique using traditional 2D media, photographed over time as the artist manipulates the image. For example, William Kentridge is famous for his charcoal erasure films, and Piotr Dumała for his auteur technique of animating scratches on plaster.
  • Pinscreen animation: makes use of a screen filled with movable pins that can be moved in or out by pressing an object onto the screen. The screen is lit from the side so that the pins cast shadows. The technique has been used to create animated films with a range of textural effects difficult to achieve with traditional cel animation.
  • Sand animation: sand is moved around on a back- or front-lighted piece of glass to create each frame for an animated film. This creates an interesting effect when animated because of the light contrast.
  • Flip book: a flip book (sometimes, especially in British English, called a flick book) is a book with a series of pictures that vary gradually from one page to the next, so that when the pages are turned rapidly, the pictures appear to animate by simulating motion or some other change. Flip books are often illustrated books for children, but may also be geared towards adults and employ a series of photographs rather than drawings. Flip books are not always separate books, but may appear as an added feature in ordinary books or magazines, often in the page corners. Software packages and websites are also available that convert digital video files into custom-made flip books

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